The diagram above represents a model of signal transduction pathways (I and II) in a cell that is targeted by two different hormones (H, and H.). The components of the signal transduction pathways are identified in
the figure legend. Each cellular molecule in both pathways can exist in an inactive or active form. When the
components in pathway I are sequentially activated, the TAP molecules promote cell division. When the
components in pathway II are sequentially activated, downstream signaling by the G protein is inhibited.
Based on the model, which of the following mutations is most likely to result in a cell that will generate a
cancerous tumor?

Johannesburg kepler, an apprentice of brahe, believed in the heliocentric universe but rejected past astronomers belief in

Classify the structures as homologous or analogous, depending on their structure and function.

In a hypothetical breed of dogs, coat color is controlled by two genes. there are six different coat colors in this breed: black, brown, cream, gray, silver, and tan. consider the following crosses. cross 1: black females from a lineage of all black dogs are crossed with brown males from a lineage of all brown dogs. f1 males and females are all black. when f1 are intercrossed, f2 males and females are black or brown. cross 2: black females from a lineage of all black dogs are crossed with tan males from a lineage where all males are tan and all females are cream. f1 males are black, f1 females are gray. when f1 are intercrossed, f2 males and females are black, brown, gray, or tan. cross 3: silver females from a lineage where all females are silver and all males are gray are crossed with brown males from a lineage of all brown dogs. f1 males and females are all gray. when f1 are intercrossed, f2 males are black, brown, gray, or tan, f2 females are cream, gray, silver, or tan. select the correct statements regarding the mode of inheritance of the coat color genes. a) both genes are x-linked. b) both genes are autosomal. c) one of the genes modifies the expression of the other gene. d) each gene has an additive effect on the intensity of coat color. e) each gene independently specifies three colors. f) one of the genes is autosomal, and the other is x-linked.